a TBI has not OBDII, use the paperclip method
12 No spark pulses at CPU or else good system, no codes
13 Oxygen sensor output remained at .35-.55 volts for more than one
minute after warmup. Possible open circuit.
14 Coolant sensor indicated a temperature above 130C for 3 seconds
after engine ran for 20 seconds. Probably a short
15 Coolant sensor indicated a temperature below -30C for 3 seconds
when MAT > - 13 or engine running over 1 minute. Probably open
circuit
21 Throttle pos sensor above 2.5 volts for 2 seconds when engine speed
below 1600 rpm
22 Throttle pos sensor below .2 volt for 2 seconds while engine running
23 MAT sensor shows < -30 degrees C for 3 seconds after engine running
1 minute or coolant > 30C. Probably an open circuit.
24 No speed sensor pulses when engine between 2000-4000 rpm, throttle
closed, high vacuum, not in neutral and all for 5 seconds
25 MAT sensor showed above 145 degrees C for 2 seconds after engine
ran for over 1 minute. Possible short circuit.
33 MAP sensor voltage too high (> 4.00 v). Possible vacuum leak to
sensor or faulty sensor.
34 MAP sensor voltage too low (< 0.25 v) with ignition on or engine
running >1200 rpm and throttle open >20%
35 Closed throttle idle speed is more than 75 rpm above or below correct
value for more than 45 seconds
41 No Crankshaft reference pulses. Ignition voltage < 11 volts etc.
42 Open or short on EST or BYPASS line to ignition module.
44 O2 sensor showed < 0.250 volt for over 20 seconds while operating
closed loop
45 O2 sensor showed > 0.550 volt for over 50 seconds while in closed
loop with engine running over 1 minute and throttle open more than 2%
51 Check that CALPAK is in place, fully inserted, and no bent pins
53 Car's alternator has produced >16.9 volts for over 2 seconds. Check
charging system
54 Octane adjuster signal too high or too low.
55 ECU A to D error. Check ECU grounds